Potential energy = (mass) x (gravity) x (height)
Divide each side by (G x H) : Mass = PE / (G x H)
PE = 6 joules
Gravity = 9.8 m/s
Height = 3 m
Mass = 6 / (9.8 x 3) =
6 / (29.4) = <em>0.204 kg</em>
(weighs about 2 newtons or 7.2 ounces on Earth)
True, insulators don't allow energy to pass through easily
<span>The blackbody radiation of hot food can be felt on the skin in addition to the convective heat over the food. The thermal energy of the food can be felt through conductive heat when the food is touched, either by the hand or the mouth. The chemical energy in the food will be transferred to your body through the digestive system.</span>
